I have no problem with your plan… @Terry53029 is probably correct but i just mark the 1065 as final. Ultimately, as far as the IRS is concerned, the tax has been paid in the past and will continue to be paid.. you can put a preparer note in if you’d like. 

The State is a separate issue. You have to close the entity with the state. Each state has its  own procedures. Start with their website.